Brain teaser

This is the third matchstick puzzle with solution. You need to transform a 5 square configuration of matchsticks to 4 square configuration by moving three matchsticks. The puzzle and its solution approaches should impart rich new learning...

An older version of the monkey and the coconuts puzzle was modified by short story writer Ben Williams and published nearly a century ago. From then on the intriguing puzzle attained the status of one of the most attempted and least solved math puzzles of all time. We will present here easily understandable solutions to both using mathematical reasoning and for the modified version using in addition systematic enumeration…

We will first present the classic folk puzzle of counting eggs for you to solve. Proceeding further, two ways to the solution will be presented and then the binding characteristics for this type of puzzles will be brought out in the form of framework for creation and systematic solution of similar types of puzzles...

This is the second matchstick puzzle with solution. You need to transform a 5 square configuration of matchsticks to 4 square configuration by moving only two matchsticks. This puzzle and its three solution approaches impart rich new learning...

In this first part of NCERT solutions for class 10 maths on Real Numbers, we will introduce briefly the basic concepts on real numbers, the long division method formalized by Euclid in his division lemma and will treat in some details the solutions of a rich classic puzzle highlighting the application of division lemma as well as the power of mathematical reasoning based on the concept rather than formula...

Five nationals live in five differently colored houses, keep five different pets, drink five different fluids and smoke five different brands of cigarette. From 15 given statements, you have to answer—who owns the fish? Known popularly as Einstein's puzzle it was solved here more than one and half years back. This is an improved method based solution that can be understood and strategies learned by anyone...

Matchstick puzzles are popular as sticks are easily available and matchstick figures can be physically changed in any way with ease. The solution to the first matchstick puzzle involves clarity in analytical reasoning on shapes, pattern identification and ability to form effective methods...

On finally receiving double the amount he wrote in cheque after 20 paise was expended from amount received from bank, Bhabababu understood that the bank cashier must have given rupees for paise written on cheque, and paise for rupees written on cheque. The reversing created a basic confusion in finding the cheque amount...

Bhabababu received double the money he wrote in his cheque... His alert mind quickly got to the heart of the mystery. It was a simple but grave mistake made by the cashier...but again, Bhabababu knew what he wrote in his cheque, you don't. Nevertheless, if you devote a bit of interested time, you would surely know. It is not difficult on the surface...

The problem involves one to one unique assignment between six sets of entities each of five members. The assignments and the answer should result in by analyzing 15 logic conditions. This is a quite well developed logic analysis puzzle with challenges. This classic puzzle is attributed to no less a person than Einstein...